New Delhi: The GST Council is likely to extend till November 30, 2020 the tenure of the National Anti-profiteering Authority (NAA), which deals with customer complaints regarding not receiving tax cut benefits, at its next meeting on June 21, an official said. The Council at its 35th meeting, the first under new Finance Minister Nirmala Sitharaman, is also likely to consider a proposal to set up one appellate tribunal for north-eastern states, and another one for all Union Territories. Besides, the Council would discuss a proposal to levy Goods and Services Tax (GST) on extra-neutral alcohol (ENA).